Dou Jiang — Soy Milk and the Breakfast Table
Origin
Soy milk is a food of China, made there for at least two thousand years, and the coagulation of soy milk into tofu, which belongs to the same craft, is traditionally placed in the Han dynasty. Dou jiang (豆浆) is carried by the breakfast stalls and small shops of the whole country, from the north to the Jiangnan region, where it is drunk beside fried dough sticks, flatbreads and steamed buns. The savoury bowl, xian dou jiang (咸豆浆), is above all a dish of Shanghai and the lower Yangtze, as Fuchsia Dunlop describes the region's breakfasts in Land of Fish and Rice.
Description
Dou jiang (豆浆) is freshly made soy milk, the soybean (Glycine max) soaked overnight, ground with water, strained through cloth and simmered. It is served hot or cold, sweet or savoury. The savoury version, xian dou jiang (咸豆浆), belongs particularly to Shanghai and the lower Yangtze: hot soy milk poured over black vinegar in the bowl, where it sets in soft curds, and topped with dried shrimp, pieces of you tiao, preserved mustard greens and chilli oil.
The Thread
Flavour Context
Sweet dou jiang is clean, lightly beany and gently sweet, and it is drunk with fried dough sticks (you tiao), sesame flatbreads and steamed buns, whose richness and crispness it softens. Xian dou jiang is savoury and sharp, with the tang of black vinegar, the salt of dried shrimp and preserved mustard greens, and the heat of chilli oil. The vinegar curdles the hot milk into soft clouds, and the you tiao, torn into pieces on top, supplies crunch against that softness.